| Photoproduction of ω-Mesons at ELSA and the role of azimuthal asymmetries |
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| 作者姓名： | H. Schmieden |
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| 作者单位： | Rheinische Friedrich-Wilhelms-Universität, Physikalisches Institut, D-53115 Bonn, Germany |
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| 基金项目： | Supported by German Science Foundation （DFG） in the frame ot the SFB/TR-16 |
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| 摘 要： | Measurements of ω photoproduction of the Crystal-Barrel/TAPS experiment at the ELSA accelerator of Bonn University are presented which used linearly polarized tagged photon beam from threshold to Eγ = 1700MeV. The azimuthal asymmetries ∑and ∑πindicate s-channel resonance contributions on top of the established t-channel exchange processes. These findings are further enhanced by a very first measurement of the G-asymmetry which, in addition to the polarized photon beam, also requires a longitudinally polarized proton target. An intuitive interpretation of the specific sensitivity of the azimuthal asymmetries to the reaction mechanisms involved is given.
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| 关 键 词： | 不对称 方位角 艾尔莎 光生 介子 合作 线性极化 实验测量 |
| 收稿时间： | 2009-8-7 |
Photoproduction of co-Mesons at ELSA and the role of azimuthal asymmetries |
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| H. Schmieden.Photoproduction of co-Mesons at ELSA and the role of azimuthal asymmetries[J].High Energy Physics and Nuclear Physics,2009,33(12):1146-1152. |
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| Authors: | H Schmieden |
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| Institution: | Rheinische Friedrich-Wilhelms-Universitat, Physikalisches Institut, D-53115 Bonn, Germany |
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| Abstract: | baryon resonances, photoproduction, vector mesons, polarization |
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| Keywords: | baryon resonances photoproduction vector mesons polarization |
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